Editor Help

The editor toolbar is designed for frequent used markup operations. For example, For example, to make a bulleted list, you can select the lines in the editor you want to turn into a bulleted list and click the Bulleted List submenu under the Text menu. The editor will automatically add the - symbol at the beginning of each line.

For more advanced markup, you can follow the Markdown Syntax to write your document.

Editor Demo

Format

This is a minimal working example written in Markdown with LaTeX.
Click the `preview` menu or use the shortcut `Ctrl(Cmd) + Enter` to refresh the preview.

## Math formula

- Inline math example: $i=\sqrt{-1}$. 
- Display math example: $$x^2+y^2=z^2.$$

## Numbering and referencing

For any real number $x$, we have
\begin{align}
\exp (ix)& =\sum _{k=0}^{\infty }{\frac {(ix)^{k}}{k!}}\label{eq:1}\\
& = \cos x+i\sin x.\label{eq:2}
\end{align}
The equation \eqref{eq:1} is the power series definition of the exponential function, and the equation \eqref{eq:2} is known as Euler's formula.

## Theorem environment

::::: {.theorem-like name="Theorem" title="Fermat's Last Theorem" .unnumbered}
No three positive integers $a$, $b$, and $c$ satisfy the equation $a^n + b^n = c^n$ for any integer value of $n$ greater than $2$.
:::::

::::: {.proof-like name="Fermat's lost proof"}
I have a proof of this theorem, but there is not enough space.
:::::

## LaTeX package

To use a LaTeX package, include it in the `latex preamble` submenu under the `Meta` menu. Here is an example of using `tikz-cd` package:

\begin{tikzcd}
  T
  \arrow[drr, bend left, "x"]
  \arrow[ddr, bend right, "y"]
  \arrow[dr, dotted] & & \\
  & X \times_Z Y \arrow[r, "p"] \arrow[d, "q"]
  & X \arrow[d, "f"] \\
  & Y \arrow[r, "g"]
  & Z
\end{tikzcd}

## Bibliography

Here is a citation example  in Chicago author-date style:

Einstein's journal paper [@einstein] and Dirac's book [@dirac] are physics-related items.

## Reference